TNF Fission: Climashield Neo or Polargard Delta?

(Oops, not first post, apparently. Just first post in a very long time.)

I'm sure someone will weigh in on the exact CLO values (it is on a recent thread) but I think in general, the Climashield has a better warmth to weight ratio. The only advantage I think that Polarguard Delta has is that it is more durable.

Durability: is this in regards to compression/loft cycles, or laundering?

I'm not nearly as an avid backpacker as many of you (primarily due to having my interests distributed in climbing, canyoneering, and mountain biking), so loft durability is possibly a lesser issue for me. However, I'm in the habit of laundering my bag every 2-3 trips or once-a-year, whichever comes first.

Would this be enough to make my choice one way or the other?

The reason Polarguard Delta was dropped & Climashield developed was because P.G. Delta has a somewhat shorter life span than its P.G predecessor. I have a P.G. Delta -20 winter bag. So far (with minimal use) so good. It does regain loft very well but it does not compress well.I have to use a large compression sack and lash it OUTSIDE my big 6,500 c.u. in. Dana Terraplane!

And I just feel that even the best version of PrimaLoft loses its loft way too soon. So my vote goes to the more durable, warmer and more compressable Climashield.

Eric

If the Climashield is warmer, which is what I have read in a few places, go for it. I have the Fission 20, and even the first time out found it to be a 35 degree bag, 30 at best if you sleep warm. It is simply not terribly warm, so if a different fill can help in that regard, consider it.

Thanks for the replies, folks.

I went back to the outlet store and found that all they had were the Polarguard Delta (2006) versions. Despite that, I'm keeping this bag as with all the discounts it ended up being ~$86.

(That's actually cheaper than either of my Kelty Light Year bags.)

That's a great price on a solid bag. I have a Cat's Meow (made out of Polarguard Delta) and it has lasted several years. I'm not going to replace it any time soon. By the time you wear it out (which may be many years from now) there will probably be better synthetics out there than are available now.